<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
      <img src="../assets/logo.png" alt="">
      </div>
       <el-form ref="loginFormRef" class="login_form" :model="loginForm" :rules="loginFormRules">
         <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username"   prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
         <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" show-password prefix-icon="iconfont icon-3702mima"></el-input>
        </el-form-item>
        <!-- 登录 -->
        <el-form>
          <el-form-item class="login_button">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
          </el-form-item>
        </el-form>
       </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 12, message: '长度在 6 到 12 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请输入正确的用户名和密码')
        const { data: res } = await this.$http.post('login', this.loginForm)
        console.log(res)
        if (res.meta.status !== 200) return alert('登录失败')
        // 将登录成功的token保存到sessionstorage中
        window.sessionStorage.setItem('token', res.data.token)
        // 跳转
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style scoped lang="less">
.login_container {
  background-color: #2b4b6b;
  height: 100%;
  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    .avatar_box {
      width: 130px;
      height: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      overflow: hidden;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;
      box-shadow: 0 0 10px #ddd;
      padding: 10px;
      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
    .login_form {
      position: absolute;
      bottom: 0;
      width: 100%;
      padding: 0 20px;
      box-sizing: border-box;
      text-align: center;
    }
  }
}
</style>
